<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>迷宫表格</title>
  <style>
    table {
      margin: 0 auto;
      width: 650px;
      height: 650px;
      text-align: center;
      border-collapse: collapse;
    }

    td {
      border: 2px solid #000;
    }
  </style>
</head>

<body>
  <table border="2">
    <tr>
      <td colspan="12">1</td>
      <td rowspan="12">&nbsp;2&nbsp;</td>
    </tr>
    <tr>
      <td rowspan="12">&nbsp;4&nbsp;</td>
      <td colspan="10">5</td>
      <td rowspan="10">&nbsp;6&nbsp;</td>
    </tr>
    <tr>
      <td rowspan="10">&nbsp;8&nbsp;</td>
      <td colspan="8">9</td>
      <td rowspan="8">10</td>
    </tr>
    <tr>
      <td rowspan="8">12</td>
      <td colspan="6">13</td>
      <td rowspan="6">14</td>
    </tr>
    <tr>
      <td rowspan="6">16</td>
      <td colspan="4">17</td>
      <td rowspan="4">18</td>
    </tr>
    <tr>
      <td rowspan="4">20</td>
      <td colspan="2">21</td>
      <td rowspan="2">22</td>
    </tr>
    <tr>
      <td rowspan="2">24</td>
      <td>25</td>
    </tr>
    <tr>
      <td colspan="2">23</td>
    </tr>
    <tr>
      <td colspan="4">19</td>
    </tr>
    <tr>
      <td colspan="6">15</td>
    </tr>
    <tr>
      <td colspan="8">11</td>
    </tr>
    <tr>
      <td colspan="10">7</td>
    </tr>
    <tr>
      <td colspan="12">3</td>
    </tr>
  </table>
</body>

</html>